William b



W. ROCK:

(No Model.)

IMIMIIIIIIIII/QI'l/Ll" -d June 8,1880.

UNITED STATES PATENT OFFICE.

WILLIAM E. BROOK, OF NEW YORK, N. Y.,/ASSIGNOR OF ONE-HALF OF 1518 RIGHTTO ANNA L. BERRIAN, OF SAME PLACE.

CAN-OPENER.

SPECIFICATION forming part of Letters Patent No. 228,595, dated. June 8,1880.

Application filed April 8, 1880.

To all whom it may concern:

Be it known that I, WILLIAM E. BROGK, of the city of New York, in thecounty and State of New York, have invented certain new and usefulImprovements in Gan-Openers, of

which the following is a specification.

My invention consists in a can-opener composed ofa stock having in itsface or under side an annular groove, a blade made in the form of aportion of a cylinder inserted into said groove, and having itscutting-edge tapering or inclined backward or rearward obliquely uponeach side of a penetrating-point, and a pin inserted through said stockand blade transversely across the groove and serving to secure the bladetherein. The said stock is preferably provided with two or moreconcentric annular grooves, in either one of which the blade, whichmaybe made of a piece of sheet-steel rolled into shape, so as to adaptthe instrument for opening cans of different sizes, may be secured.

In the accompanying drawings, Figure 1 represents a perspective view ofa can-opener constructed according to my invention. Fig. 2 represents acentral longitudinal section thereof, and Fig. 3 represents a plan ofthe sheet-metal blank which is adapted to be bent into circular form tomake the blade.

Similar letters of reference designate correspondin g parts in all thefigures.

A designates the stock of my can-opener, and B the blade thereof. Thestock is here represented as made of wood, and is composed of a circulardisk-like portion, a, and a handle, b.

In the bottom or under side of the disk-like portion a. are annulargrooves 0. (Here represented as two in number and concentric with eachother.)

The blade is detachably secured in the stock, so that it may be insertedin any of the grooves to adapt it for opening cans of various sizes.

The blade 13 is composed of a piece or blank of sheet-steel, and beforeit is bent into a cylindric form it is of the shape represented in Fig.3. t

To secure the blade in the stock the piece (No model.)

or blank B is bent into the form of a cylinder,

and has its end inserted in one of the grooves c and secured by a pin,O, which passes transversely across the disk like portion a and throughholes d e in the edge of the blade B, thereby securing the blade inplace in the groove 0.

When the blade is bent and secured in the stock it presents the form ofa portion of a cylinder, and, as clearly represented in Fig.

1, its cutting-edge is inclined obliquely rearward upon each sideof apenetrating or piercing point,f.

The instrument is always intended to take out nearly the whole end of around can, and the diameter of the cylindric blade B should only be alittle less than the diameter of the can to be out.

When it is desired to open a smaller can the blade should be inserted inthe groove of less diameter, andto permit of the pin 0 bein g insertedthrough the blade the holes dare in the form of elongated slots 5 but inlieu of these slots the blade might have several holes, so placed thatwhen the blade is inserted in any of the grooves 0 two of said holeswill always be coincident.

When it is desired to open a can a slight blow 011 the handle of thestock will cause the penetrating-point f to puncture the tin, and aslight pressure will then cut out the head, the tin being dividedreadily by the oblique cutting-edges g.

The portion of the can-head which comes opposite the point h, at whichthe ends of the blade overlap, may not be divided, and hence suchportion constitutes a narrow hinge upon which the head may be turnedover.

What I claim as my invention, and desire to secure by Letters Patent, is

l. A can-opener composed of a stock hav- 9o ing in its face or underside an annular groove, a slotted blade made in the form of a portion ofa cylinder inserted into said groove, and having its cutting-edgetapering or inclined backward or rearward obliquely upon 5 each side ofa penetrating-point, and a pin inserted through said stock and slots inthe blade transversely across the groove to secure the blade therein,substantially as speciforded for securing the blade in any one of fied.the said grooves, substantially as specified. 2. The can-opener composedof the stock A, provided with two or more concentric WILLIAM BROOK 5grooves, c, the blade B, provided with holes Witnesses: cl 0, and thepin 0, inserted transversely across FREDK. HAYNES,

the stock and blade, whereby provision is af- 1 A. O. WEBB.

